Alternatively does anyone know a tablet/e-reader app that works well other than Moonreader? Of the ones I have looked at, it works easiest so far. But I want to be able to see the series metadata somehow so I can read the books in order.

To start Moonreader + shows all calibre series info if you sort by tags. It places the series at the top of the tags list. When you open a series from this list all of the books will be in order.

That said, I would suggest using the Calibre Companion (CC) App to transfer books to your device (wifi required). I use it to manage the books on my Nexus 7 and open books via CC in Moonreader +. When you transfer books CC uses the metadata from calibre's library and you see the author, title, series and series index by default so no plugboard required, see attached. I no longer import any books into Moonreader+ I simply use CC to launch whatever book I desire to read.